/************************************************************************** * * Copyright 2009 VMware, Inc. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ #include "util/u_memory.h" #include "util/u_math.h" #include "lp_debug.h" #include "lp_state.h" #include "lp_rast.h" #include "lp_rast_priv.h" #include "lp_tile_soa.h" #include "lp_bld_debug.h" #include "lp_bin.h" /** * Begin the rasterization phase. * Map the framebuffer surfaces. Initialize the 'rast' state. */ static boolean lp_rast_begin( struct lp_rasterizer *rast, struct pipe_surface *cbuf, struct pipe_surface *zsbuf, boolean write_color, boolean write_zstencil, unsigned width, unsigned height ) { struct pipe_screen *screen = rast->screen; LP_DBG(DEBUG_RAST, "%s %dx%d\n", __FUNCTION__, width, height); pipe_surface_reference(&rast->state.cbuf, cbuf); pipe_surface_reference(&rast->state.zsbuf, zsbuf); rast->width = width; rast->height = height; rast->state.write_zstencil = write_zstencil; rast->state.write_color = write_color; rast->check_for_clipped_tiles = (width % TILE_SIZE != 0 || height % TILE_SIZE != 0); if (cbuf) { rast->cbuf_transfer = screen->get_tex_transfer(rast->screen, cbuf->texture, cbuf->face, cbuf->level, cbuf->zslice, PIPE_TRANSFER_READ_WRITE, 0, 0, width, height); if (!rast->cbuf_transfer) return FALSE; rast->cbuf_map = screen->transfer_map(rast->screen, rast->cbuf_transfer); if (!rast->cbuf_map) return FALSE; } if (zsbuf) { rast->zsbuf_transfer = screen->get_tex_transfer(rast->screen, zsbuf->texture, zsbuf->face, zsbuf->level, zsbuf->zslice, PIPE_TRANSFER_READ_WRITE, 0, 0, width, height); if (!rast->zsbuf_transfer) return FALSE; rast->zsbuf_map = screen->transfer_map(rast->screen, rast->zsbuf_transfer); if (!rast->zsbuf_map) return FALSE; } return TRUE; } /** * Finish the rasterization phase. * Unmap framebuffer surfaces. */ static void lp_rast_end( struct lp_rasterizer *rast ) { struct pipe_screen *screen = rast->screen; if (rast->cbuf_map) screen->transfer_unmap(screen, rast->cbuf_transfer); if (rast->zsbuf_map) screen->transfer_unmap(screen, rast->zsbuf_transfer); if (rast->cbuf_transfer) screen->tex_transfer_destroy(rast->cbuf_transfer); if (rast->zsbuf_transfer) screen->tex_transfer_destroy(rast->zsbuf_transfer); rast->cbuf_transfer = NULL; rast->zsbuf_transfer = NULL; rast->cbuf_map = NULL; rast->zsbuf_map = NULL; } /** * Begining rasterization of a tile. * \param x window X position of the tile, in pixels * \param y window Y position of the tile, in pixels */ static void lp_rast_start_tile( struct lp_rasterizer *rast, unsigned thread_index, unsigned x, unsigned y ) { LP_DBG(DEBUG_RAST, "%s %d,%d\n", __FUNCTION__, x, y); rast->tasks[thread_index].x = x; rast->tasks[thread_index].y = y; } /** * Clear the rasterizer's current color tile. * This is a bin command called during bin processing. */ void lp_rast_clear_color( struct lp_rasterizer *rast, unsigned thread_index, const union lp_rast_cmd_arg arg ) { const uint8_t *clear_color = arg.clear_color; uint8_t *color_tile = rast->tasks[thread_index].tile.color; LP_DBG(DEBUG_RAST, "%s 0x%x,0x%x,0x%x,0x%x\n", __FUNCTION__, clear_color[0], clear_color[1], clear_color[2], clear_color[3]); if (clear_color[0] == clear_color[1] && clear_color[1] == clear_color[2] && clear_color[2] == clear_color[3]) { memset(color_tile, clear_color[0], TILE_SIZE * TILE_SIZE * 4); } else { unsigned x, y, chan; for (y = 0; y < TILE_SIZE; y++) for (x = 0; x < TILE_SIZE; x++) for (chan = 0; chan < 4; ++chan) TILE_PIXEL(color_tile, x, y, chan) = clear_color[chan]; } } /** * Clear the rasterizer's current z/stencil tile. * This is a bin command called during bin processing. */ void lp_rast_clear_zstencil( struct lp_rasterizer *rast, unsigned thread_index, const union lp_rast_cmd_arg arg) { unsigned i, j; uint32_t *depth_tile = rast->tasks[thread_index].tile.depth; LP_DBG(DEBUG_RAST, "%s 0x%x\n", __FUNCTION__, arg.clear_zstencil); for (i = 0; i < TILE_SIZE; i++) for (j = 0; j < TILE_SIZE; j++) depth_tile[i*TILE_SIZE + j] = arg.clear_zstencil; } /** * Load tile color from the framebuffer surface. * This is a bin command called during bin processing. */ void lp_rast_load_color( struct lp_rasterizer *rast, unsigned thread_index, const union lp_rast_cmd_arg arg) { LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__); /* call u_tile func to load colors from surface */ } /** * Load tile z/stencil from the framebuffer surface. * This is a bin command called during bin processing. */ void lp_rast_load_zstencil( struct lp_rasterizer *rast, unsigned thread_index, const union lp_rast_cmd_arg arg ) { LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__); /* call u_tile func to load depth (and stencil?) from surface */ } void lp_rast_set_state( struct lp_rasterizer *rast, unsigned thread_index, const union lp_rast_cmd_arg arg ) { const struct lp_rast_state *state = arg.set_state; LP_DBG(DEBUG_RAST, "%s %p\n", __FUNCTION__, (void *) state); /* just set the current state pointer for this rasterizer */ rast->tasks[thread_index].current_state = state; } /* Within a tile: */ /** * Run the shader on all blocks in a tile. This is used when a tile is * completely contained inside a triangle. * This is a bin command called during bin processing. */ void lp_rast_shade_tile( struct lp_rasterizer *rast, unsigned thread_index, const union lp_rast_cmd_arg arg ) { const struct lp_rast_shader_inputs *inputs = arg.shade_tile; const unsigned tile_x = rast->tasks[thread_index].x; const unsigned tile_y = rast->tasks[thread_index].y; const unsigned mask = ~0; unsigned x, y; LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__); /* Use the existing preference for 4x4 (four quads) shading: */ for (y = 0; y < TILE_SIZE; y += 4) for (x = 0; x < TILE_SIZE; x += 4) lp_rast_shade_quads( rast, thread_index, inputs, tile_x + x, tile_y + y, mask); } /** * Compute shading for a 4x4 block of pixels. * This is a bin command called during bin processing. */ void lp_rast_shade_quads( struct lp_rasterizer *rast, unsigned thread_index, const struct lp_rast_shader_inputs *inputs, unsigned x, unsigned y, unsigned mask) { #if 1 const struct lp_rast_state *state = rast->tasks[thread_index].current_state; struct lp_rast_tile *tile = &rast->tasks[thread_index].tile; void *color; void *depth; uint32_t ALIGN16_ATTRIB masks[2][2][2][2]; unsigned ix, iy; int block_offset; assert(state); /* Sanity checks */ assert(x % TILE_VECTOR_WIDTH == 0); assert(y % TILE_VECTOR_HEIGHT == 0); /* mask: the rasterizer wants to treat pixels in 4x4 blocks, but * the pixel shader wants to swizzle them into 4 2x2 quads. * * Additionally, the pixel shader wants masks as full dword ~0, * while the rasterizer wants to pack per-pixel bits tightly. */ #if 0 unsigned qx, qy; for (qy = 0; qy < 2; ++qy) for (qx = 0; qx < 2; ++qx) for (iy = 0; iy < 2; ++iy) for (ix = 0; ix < 2; ++ix) masks[qy][qx][iy][ix] = mask & (1 << (qy*8+iy*4+qx*2+ix)) ? ~0 : 0; #else masks[0][0][0][0] = mask & (1 << (0*8+0*4+0*2+0)) ? ~0 : 0; masks[0][0][0][1] = mask & (1 << (0*8+0*4+0*2+1)) ? ~0 : 0; masks[0][0][1][0] = mask & (1 << (0*8+1*4+0*2+0)) ? ~0 : 0; masks[0][0][1][1] = mask & (1 << (0*8+1*4+0*2+1)) ? ~0 : 0; masks[0][1][0][0] = mask & (1 << (0*8+0*4+1*2+0)) ? ~0 : 0; masks[0][1][0][1] = mask & (1 << (0*8+0*4+1*2+1)) ? ~0 : 0; masks[0][1][1][0] = mask & (1 << (0*8+1*4+1*2+0)) ? ~0 : 0; masks[0][1][1][1] = mask & (1 << (0*8+1*4+1*2+1)) ? ~0 : 0; masks[1][0][0][0] = mask & (1 << (1*8+0*4+0*2+0)) ? ~0 : 0; masks[1][0][0][1] = mask & (1 << (1*8+0*4+0*2+1)) ? ~0 : 0; masks[1][0][1][0] = mask & (1 << (1*8+1*4+0*2+0)) ? ~0 : 0; masks[1][0][1][1] = mask & (1 << (1*8+1*4+0*2+1)) ? ~0 : 0; masks[1][1][0][0] = mask & (1 << (1*8+0*4+1*2+0)) ? ~0 : 0; masks[1][1][0][1] = mask & (1 << (1*8+0*4+1*2+1)) ? ~0 : 0; masks[1][1][1][0] = mask & (1 << (1*8+1*4+1*2+0)) ? ~0 : 0; masks[1][1][1][1] = mask & (1 << (1*8+1*4+1*2+1)) ? ~0 : 0; #endif assert((x % 2) == 0); assert((y % 2) == 0); ix = x % TILE_SIZE; iy = y % TILE_SIZE; /* offset of the 16x16 pixel block within the tile */ block_offset = ((iy/4)*(16*16) + (ix/4)*16); /* color buffer */ color = tile->color + 4 * block_offset; /* depth buffer */ depth = tile->depth + block_offset; /* XXX: This will most likely fail on 32bit x86 without -mstackrealign */ assert(lp_check_alignment(masks, 16)); assert(lp_check_alignment(depth, 16)); assert(lp_check_alignment(color, 16)); assert(lp_check_alignment(state->jit_context.blend_color, 16)); /* run shader */ state->jit_function( &state->jit_context, x, y, inputs->a0, inputs->dadx, inputs->dady, &masks[0][0][0][0], color, depth); #else struct lp_rast_tile *tile = &rast->tile; unsigned chan_index; unsigned q, ix, iy; x %= TILE_SIZE; y %= TILE_SIZE; /* mask */ for (q = 0; q < 4; ++q) for(iy = 0; iy < 2; ++iy) for(ix = 0; ix < 2; ++ix) if(masks[q] & (1 << (iy*2 + ix))) for (chan_index = 0; chan_index < NUM_CHANNELS; ++chan_index) TILE_PIXEL(tile->color, x + q*2 + ix, y + iy, chan_index) = 0xff; #endif } /* End of tile: */ /** * Write the rasterizer's color tile to the framebuffer. */ static void lp_rast_store_color( struct lp_rasterizer *rast, unsigned thread_index) { const unsigned x = rast->tasks[thread_index].x; const unsigned y = rast->tasks[thread_index].y; int w = TILE_SIZE; int h = TILE_SIZE; if (x + w > rast->width) w -= x + w - rast->width; if (y + h > rast->height) { int h2; h2 = h - (y + h - rast->height); assert(h2 <= TILE_SIZE); h = h2; } assert(w >= 0); assert(h >= 0); assert(w <= TILE_SIZE); assert(h <= TILE_SIZE); LP_DBG(DEBUG_RAST, "%s [%u] %d,%d %dx%d\n", __FUNCTION__, thread_index, x, y, w, h); lp_tile_write_4ub(rast->cbuf_transfer->format, rast->tasks[thread_index].tile.color, rast->cbuf_map, rast->cbuf_transfer->stride, x, y, w, h); } static void lp_tile_write_z32(const uint32_t *src, uint8_t *dst, unsigned dst_stride, unsigned x0, unsigned y0, unsigned w, unsigned h) { unsigned x, y; uint8_t *dst_row = dst + y0*dst_stride; for (y = 0; y < h; ++y) { uint32_t *dst_pixel = (uint32_t *)(dst_row + x0*4); for (x = 0; x < w; ++x) { *dst_pixel++ = *src++; } dst_row += dst_stride; } } /** * Write the rasterizer's z/stencil tile to the framebuffer. */ static void lp_rast_store_zstencil( struct lp_rasterizer *rast, unsigned thread_index ) { const unsigned x = rast->tasks[thread_index].x; const unsigned y = rast->tasks[thread_index].y; unsigned w = TILE_SIZE; unsigned h = TILE_SIZE; if (x + w > rast->width) w -= x + w - rast->width; if (y + h > rast->height) h -= y + h - rast->height; LP_DBG(DEBUG_RAST, "%s %d,%d %dx%d\n", __FUNCTION__, x, y, w, h); assert(rast->zsbuf_transfer->format == PIPE_FORMAT_Z32_UNORM); lp_tile_write_z32(rast->tasks[thread_index].tile.depth, rast->zsbuf_map, rast->zsbuf_transfer->stride, x, y, w, h); } /** * Write the rasterizer's tiles to the framebuffer. */ static void lp_rast_end_tile( struct lp_rasterizer *rast, unsigned thread_index ) { LP_DBG(DEBUG_RAST, "%s\n", __FUNCTION__); if (rast->state.write_color) lp_rast_store_color(rast, thread_index); if (rast->state.write_zstencil) lp_rast_store_zstencil(rast, thread_index); } /** * Rasterize commands for a single bin. * \param x, y position of the bin's tile in the framebuffer * Must be called between lp_rast_begin() and lp_rast_end(). */ static void rasterize_bin( struct lp_rasterizer *rast, unsigned thread_index, const struct cmd_bin *bin, int x, int y) { const struct cmd_block_list *commands = &bin->commands; struct cmd_block *block; unsigned k; lp_rast_start_tile( rast, thread_index, x, y ); /* simply execute each of the commands in the block list */ for (block = commands->head; block; block = block->next) { for (k = 0; k < block->count; k++) { block->cmd[k]( rast, thread_index, block->arg[k] ); } } lp_rast_end_tile( rast, thread_index ); } /** * Rasterize/execute all bins. */ static void rasterize_bins( struct lp_rasterizer *rast, unsigned thread_index, struct lp_bins *bins, const struct pipe_framebuffer_state *fb, bool write_depth ) { /* loop over tile bins, rasterize each */ #if 0 { unsigned i, j; for (i = 0; i < bins->tiles_x; i++) { for (j = 0; j < bins->tiles_y; j++) { struct cmd_bin *bin = lp_get_bin(bins, i, j); rasterize_bin( rast, thread_index, bin, i * TILE_SIZE, j * TILE_SIZE ); } } } #else { struct cmd_bin *bin; int x, y; while ((bin = lp_bin_iter_next(bins, &x, &y))) { rasterize_bin( rast, thread_index, bin, x * TILE_SIZE, y * TILE_SIZE); } } #endif } /** * Called by rasterizer when it has something for us to render. */ void lp_rasterize_bins( struct lp_rasterizer *rast, struct lp_bins *bins, const struct pipe_framebuffer_state *fb, bool write_depth ) { LP_DBG(DEBUG_SETUP, "%s\n", __FUNCTION__); lp_rast_begin( rast, fb->cbufs[0], fb->zsbuf, fb->cbufs[0] != NULL, fb->zsbuf != NULL && write_depth, fb->width, fb->height ); if (rast->num_threads == 0) { /* no threading */ lp_bin_iter_begin( bins ); rasterize_bins( rast, 0, bins, fb, write_depth ); } else { /* threaded rendering! */ unsigned i; rast->bins = bins; rast->fb = fb; rast->write_depth = write_depth; lp_bin_iter_begin( bins ); /* signal the threads that there's work to do */ for (i = 0; i < rast->num_threads; i++) { pipe_semaphore_signal(&rast->tasks[i].work_ready); } /* wait for work to complete */ for (i = 0; i < rast->num_threads; i++) { pipe_semaphore_wait(&rast->tasks[i].work_done); } } lp_rast_end( rast ); LP_DBG(DEBUG_SETUP, "%s done \n", __FUNCTION__); } /** * This is the thread's main entrypoint. * It's a simple loop: * 1. wait for work * 2. do work * 3. signal that we're done */ static void * thread_func( void *init_data ) { struct lp_rasterizer_task *task = (struct lp_rasterizer_task *) init_data; struct lp_rasterizer *rast = task->rast; int debug = 0; while (1) { /* wait for work */ if (debug) debug_printf("thread %d waiting for work\n", task->thread_index); pipe_semaphore_wait(&task->work_ready); /* do work */ if (debug) debug_printf("thread %d doing work\n", task->thread_index); rasterize_bins(rast, task->thread_index, rast->bins, rast->fb, rast->write_depth); /* signal done with work */ if (debug) debug_printf("thread %d done working\n", task->thread_index); pipe_semaphore_signal(&task->work_done); } return NULL; } /** * Initialize semaphores and spawn the threads. */ static void create_rast_threads(struct lp_rasterizer *rast) { unsigned i; rast->num_threads = debug_get_num_option("LP_NUM_THREADS", MAX_THREADS); rast->num_threads = MIN2(rast->num_threads, MAX_THREADS); /* NOTE: if num_threads is zero, we won't use any threads */ for (i = 0; i < rast->num_threads; i++) { pipe_semaphore_init(&rast->tasks[i].work_ready, 0); pipe_semaphore_init(&rast->tasks[i].work_done, 0); rast->threads[i] = pipe_thread_create(thread_func, (void *) &rast->tasks[i]); } } struct lp_rasterizer *lp_rast_create( struct pipe_screen *screen ) { struct lp_rasterizer *rast; unsigned i; rast = CALLOC_STRUCT(lp_rasterizer); if(!rast) return NULL; rast->screen = screen; for (i = 0; i < Elements(rast->tasks); i++) { rast->tasks[i].tile.color = align_malloc( TILE_SIZE*TILE_SIZE*4, 16 ); rast->tasks[i].tile.depth = align_malloc( TILE_SIZE*TILE_SIZE*4, 16 ); rast->tasks[i].rast = rast; rast->tasks[i].thread_index = i; } create_rast_threads(rast); return rast; } /* Shutdown: */ void lp_rast_destroy( struct lp_rasterizer *rast ) { unsigned i; pipe_surface_reference(&rast->state.cbuf, NULL); pipe_surface_reference(&rast->state.zsbuf, NULL); for (i = 0; i < Elements(rast->tasks); i++) { align_free(rast->tasks[i].tile.depth); align_free(rast->tasks[i].tile.color); } FREE(rast); }